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From aitozi <gjying1...@gmail.com>
Subject Streaming
Date Wed, 27 Jun 2018 09:12:02 GMT
Hi, community

I am using flink to deal with some situation.

1. "distinct count" to calculate the uv/pv.
2.  calculate the topN of the past 1 hour or 1 day time.

Are these all realized by window? Or is there a best practice on doing this?

3. And when deal with the distinct, if there is no need to do the keyBy
previous, how does the window deal with this.

Thanks 
Aitozi.



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